Across eleven countries, a new review of twenty-one studies finds that AI mental health chatbots are stepping into a vast and largely unmet human need — reaching people who might otherwise receive no care at all. Users describe these tools as empathetic, convenient, and responsive, and initial satisfaction is high. Yet the deeper question — whether they genuinely heal, and whether they are safe — remains unanswered. We are, in effect, deploying a new form of care at scale before we have learned whether it is truly care.